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Kernel: Add gpu_bxm img-rogue driver
This commit is contained in:
Mingzheng Xing
266
drivers/gpu/drm/img-rogue/include/osfunc_common.h
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266
drivers/gpu/drm/img-rogue/include/osfunc_common.h
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/*************************************************************************/ /*!
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@File
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@Title OS functions header
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@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
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@Description OS specific API definitions
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@License Dual MIT/GPLv2
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The contents of this file are subject to the MIT license as set out below.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 2 ("GPL") in which case the provisions
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of GPL are applicable instead of those above.
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If you wish to allow use of your version of this file only under the terms of
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GPL, and not to allow others to use your version of this file under the terms
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of the MIT license, indicate your decision by deleting the provisions above
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and replace them with the notice and other provisions required by GPL as set
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out in the file called "GPL-COPYING" included in this distribution. If you do
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not delete the provisions above, a recipient may use your version of this file
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under the terms of either the MIT license or GPL.
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This License is also included in this distribution in the file called
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"MIT-COPYING".
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EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
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PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/ /**************************************************************************/
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#ifndef OSFUNC_COMMON_H
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/*! @cond Doxygen_Suppress */
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#define OSFUNC_COMMON_H
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/*! @endcond */
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#if defined(__KERNEL__) && defined(__linux__)
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#include <linux/string.h>
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#else
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#include <string.h>
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#endif
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#include "img_types.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**************************************************************************/ /*!
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@Function DeviceMemSet
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@Description Set memory, whose mapping may be uncached, to a given value.
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Safe implementation for all architectures for uncached mapping,
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optimised for speed where supported by tool chains.
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In such cases, OSDeviceMemSet() is defined as a call to this
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function.
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@Input pvDest void pointer to the memory to be set
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@Input ui8Value byte containing the value to be set
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@Input ui32Size the number of bytes to be set to the given value
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@Return None
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*/ /**************************************************************************/
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void DeviceMemSet(void *pvDest, IMG_UINT8 ui8Value, size_t ui32Size);
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/**************************************************************************/ /*!
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@Function DeviceMemCopy
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@Description Copy values from one area of memory. Safe implementation for
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all architectures for uncached mapping, of either the source
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or destination, optimised for speed where supported by tool
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chains. In such cases, OSDeviceMemCopy() is defined as a call
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to this function.
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@Input pvDst void pointer to the destination memory
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@Input pvSrc void pointer to the source memory
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@Input ui32Size the number of bytes to be copied
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@Return None
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*/ /**************************************************************************/
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void DeviceMemCopy(void *pvDst, const void *pvSrc, size_t ui32Size);
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/**************************************************************************/ /*!
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@Function DeviceMemSetBytes
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@Description Potentially very slow (but safe) memset fallback for non-GNU C
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compilers for arm64/aarch64
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@Input pvDest void pointer to the memory to be set
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@Input ui8Value byte containing the value to be set
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@Input ui32Size the number of bytes to be set to the given value
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@Return None
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*/ /**************************************************************************/
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void DeviceMemSetBytes(void *pvDest, IMG_UINT8 ui8Value, size_t ui32Size);
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/**************************************************************************/ /*!
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@Function DeviceMemCopyBytes
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@Description Potentially very slow (but safe) memcpy fallback for non-GNU C
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compilers for arm64/aarch64
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@Input pvDst void pointer to the destination memory
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@Input pvSrc void pointer to the source memory
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@Input ui32Size the number of bytes to be copied
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@Return None
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*/ /**************************************************************************/
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void DeviceMemCopyBytes(void *pvDst, const void *pvSrc, size_t ui32Size);
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/**************************************************************************/ /*!
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@Function StringLCopy
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@Description Copy at most uDataSize-1 bytes from pszSrc to pszDest.
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If no null byte ('\0') is contained within the first uDataSize-1
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characters of the source string, the destination string will be
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truncated. If the length of the source string is less than uDataSize
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an additional NUL byte will be copied to the destination string
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to ensure that the string is NUL-terminated.
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@Input pszDest char pointer to the destination string
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@Input pszSrc const char pointer to the source string
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@Input uDataSize the maximum number of bytes to be copied
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@Return Size of the source string
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*/ /**************************************************************************/
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size_t StringLCopy(IMG_CHAR *pszDest, const IMG_CHAR *pszSrc, size_t uDataSize);
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#if defined(__arm64__) || defined(__aarch64__) || defined(PVRSRV_DEVMEM_TEST_SAFE_MEMSETCPY)
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#if defined(__GNUC__)
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/* Workarounds for assumptions made that memory will not be mapped uncached
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* in kernel or user address spaces on arm64 platforms (or other testing).
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*/
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#define OSDeviceMemSet(a,b,c) DeviceMemSet((a), (b), (c))
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#define OSDeviceMemCopy(a,b,c) DeviceMemCopy((a), (b), (c))
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#else /* defined __GNUC__ */
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#define OSDeviceMemSet(a,b,c) DeviceMemSetBytes((a), (b), (c))
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#define OSDeviceMemCopy(a,b,c) DeviceMemCopyBytes((a), (b), (c))
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#endif /* defined __GNUC__ */
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#else /* (defined(__arm64__) || defined(__aarch64__) || defined(PVRSRV_DEVMEM_TEST_SAFE_MEMSETCPY)) */
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/* Everything else */
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/**************************************************************************/ /*!
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@Function OSDeviceMemSet
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@Description Set memory, whose mapping may be uncached, to a given value.
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On some architectures, additional processing may be needed
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if the mapping is uncached.
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@Input a void pointer to the memory to be set
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@Input b byte containing the value to be set
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@Input c the number of bytes to be set to the given value
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@Return Pointer to the destination memory.
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*/ /**************************************************************************/
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#define OSDeviceMemSet(a,b,c) memset((a), (b), (c))
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/**************************************************************************/ /*!
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@Function OSDeviceMemCopy
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@Description Copy values from one area of memory, to another, when one
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or both mappings may be uncached.
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On some architectures, additional processing may be needed
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if mappings are uncached.
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@Input a void pointer to the destination memory
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@Input b void pointer to the source memory
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@Input c the number of bytes to be copied
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@Return Pointer to the destination memory.
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*/ /**************************************************************************/
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#define OSDeviceMemCopy(a,b,c) memcpy((a), (b), (c))
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#endif /* (defined(__arm64__) || defined(__aarch64__) || defined(PVRSRV_DEVMEM_TEST_SAFE_MEMSETCPY)) */
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/**************************************************************************/ /*!
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@Function OSCachedMemSet
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@Description Set memory, where the mapping is known to be cached, to a
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given value. This function exists to allow an optimal memset
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to be performed when memory is known to be cached.
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@Input a void pointer to the memory to be set
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@Input b byte containing the value to be set
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@Input c the number of bytes to be set to the given value
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@Return Pointer to the destination memory.
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*/ /**************************************************************************/
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#define OSCachedMemSet(a,b,c) memset((a), (b), (c))
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/**************************************************************************/ /*!
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@Function OSCachedMemCopy
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@Description Copy values from one area of memory, to another, when both
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mappings are known to be cached.
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This function exists to allow an optimal memcpy to be
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performed when memory is known to be cached.
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@Input a void pointer to the destination memory
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@Input b void pointer to the source memory
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@Input c the number of bytes to be copied
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@Return Pointer to the destination memory.
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*/ /**************************************************************************/
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#define OSCachedMemCopy(a,b,c) memcpy((a), (b), (c))
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#if defined(__KERNEL__)
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/**************************************************************************/ /*!
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@Function OSCachedMemSetWMB
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@Description Set memory, where the mapping is known to be cached or
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write-combine, to a given value and issue a write memory barrier
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after. This
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function exists to allow an optimal memset to be performed when
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memory is known to be cached or write-combine.
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@Input a void pointer to the memory to be set
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@Input b byte containing the value to be set
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@Input c the number of bytes to be set to the given value
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@Return Pointer to the destination memory.
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*/ /**************************************************************************/
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#define OSCachedMemSetWMB(a,b,c) \
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do { \
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(void) memset((a), (b), (c)); \
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OSWriteMemoryBarrier(); \
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} while (0)
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/**************************************************************************/ /*!
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@Function OSCachedMemCopy
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@Description Copy values from one area of memory, to another, when both
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mappings are known to be cached or write-combine and issue
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a write memory barrier after.
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This function exists to allow an optimal memcpy to be
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performed when memory is known to be cached or write-combine.
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@Input a void pointer to the destination memory
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@Input b void pointer to the source memory
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@Input c the number of bytes to be copied
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@Return Pointer to the destination memory.
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*/ /**************************************************************************/
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#define OSCachedMemCopyWMB(a,b,c) \
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do { \
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(void) memcpy((a), (b), (c)); \
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OSWriteMemoryBarrier(); \
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} while (0)
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#endif /* defined(__KERNEL__) */
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/**************************************************************************/ /*!
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@Function OSStringLCopy
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@Description Copy at most uDataSize-1 bytes from pszSrc to pszDest.
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If no null byte ('\0') is contained within the first uDataSize-1
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characters of the source string, the destination string will be
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truncated. If the length of the source string is less than uDataSize
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an additional NUL byte will be copied to the destination string
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to ensure that the string is NUL-terminated.
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@Input a char pointer to the destination string
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@Input b const char pointer to the source string
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@Input c the maximum number of bytes to be copied
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@Return Size of the source string
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*/ /**************************************************************************/
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#if defined(__QNXNTO__) || (defined(__linux__) && defined(__KERNEL__) && !defined(DEBUG))
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#define OSStringLCopy(a,b,c) strlcpy((a), (b), (c))
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#else /* defined(__QNXNTO__) ... */
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#define OSStringLCopy(a,b,c) StringLCopy((a), (b), (c))
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#endif /* defined(__QNXNTO__) ... */
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#ifdef __cplusplus
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}
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#endif
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#endif /* OSFUNC_COMMON_H */
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/******************************************************************************
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End of file (osfunc_common.h)
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******************************************************************************/
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